The biggest iOS racing franchise just roared onto Android devices, and it's free. Well, it's free to download, although players have to upgrade to the full version of the game in-app once they've got a taste.Android

Billed as "a social story and speech tool for autism, Down Syndrome and other special needs", My Day with WH Words aims to teach children question comprehension and conversational skills using social stories. The link above is for iOS, but here's the Android version.Android / iPhone / iPad

Mozilla has released a new version of its Firefox web browser that's optimised for Android tablets, which aims to run as well in portrait mode as in landscape mode. Firefox Sync and the Action Bar are both included too, with more information in this blog post.Android

Not that many game emulators make it onto Apple's App Store, but iMAME has. Although not officially endorsed by the team behind the famous MAME emulator, this comes with nine preloaded titles. The question is whether people will be able to load other (i.e. famous game) ROMs onto it.iPhone / iPad

Microsoft Studios continues to roll out first-party Windows Phones games tapping into its Xbox Live community. MiniSquadron is a dogfighting game with more than 60 planes, nine levels and, er, a giant squid.Windows Phone

Weather Underground has a long and respected history online, but now it's an Android app too. It pulls data from more than 22,000 weather stations around the world to offer local updates, with a choice of hourly and seven-day forecasts, and a clever map-based interface.Android

Minus is the label of techno pioneer Richie Hawtin. It's been given the remix-app treatment by innovative music technology company Liine, enabling fans to mix and match samples and loops from tracks by artists including Marc Houle, Ambivalent and Matador.iPhone / iPad

MoMinis' PlayScape isn't just a game: it's a "Mega-Game". Which means lots of mini-games in one, with an experience points and virtual currency system that runs across them all. The publisher says games will be refreshed regularly to keep it interesting.Android

BubbleScope is an accessory for iPhone that will let you take 360-degree photos and videos. It's not out until early next year, but BubblePix is a taster app that shows the kind of pics and vids you'll be able to capture with the device.iPhone

This iPhone app wants to help people visualise how new sofas will look in their living room before they buy, using augmented reality. The app aims to stimulate trade at sofa retailer CSL Sofas, with a store-finder feature and competition.iPhone

Moog Music's Animoog synthesizer app is already available for iPad, but now it's been squeezed down for the iPhone too. Amazing news (if you're au fait with concepts such as an Anisotropic Synth Engine, polyphonic modulation and flexible modulation matrix, obviously).iPhone

This one's intriguing: "Kinected uses the latest augmented reality technology to have your friends appear as if they were in the same place as you" – although this only works if they have a Microsoft Kinect controller hooked up to their PC.iPhone